Not everyone is in the same time zone as you -- we have many international users here, and some may be asleep! Patience...
Make two partitions on your hard drive using Disk Utility. Make one "Mac OS Extended" or "Mac OS Extended (Journaled), whichever your preference, and make the other partition "Free Space."
Then, hook up the hard drive to your PC and format the free space as NTFS.
The Mac will be able to "see" the NTFS partition in addition to the Mac OS Extended partition, but NTFS partitions are read-only for Macs.